JohnBennson on Nostr: If you want to monitor the Police in your town, you only need three things: 1. To ...

If you want to monitor the Police in your town, you only need three things:

1. To look up which radio frequencies they use: https://www.radioreference.com

2. This $40 USB dongle radio receiver: https://www.rtl-sdr.com/buy-rtl-sdr-dvb-t-dongles/

3. This free software to decode their digital transmissions: https://github.com/DSheirer/sdrtrunk